Requires installing Synology Tiering Vault on the cold tier
Only administrators can view and operate Synology Tiering and corresponding cold tier folders
Supports file access in hot tier via the following protocols: SMB, AFP, NFS, FTP, and WebDAV
Maximum number of concurrent SMB/NFS/AFP/FTP connections: 5,000
The actual number of concurrent connections may vary based on the Synology NAS model
Maximum tiering plans configured in the hot tier: 10
Supports a total limit of 30 folders across all plans
Only shared folders located in Btrfs volumes can be included in plans
Each plan can only have 1 cold tier
(For tiering data to a remote Synology NAS) Both hot and cold tiers require at least 1 Gbps network bandwidth, with 10 Gbps recommended for optimal performance. Daily data tiering limit depends on the network bandwidth and disk read speed on both tiers
The first character cannot be a minus sign or a space character
The last character cannot be a space
Tiering policies can be based on file inactivity or modification, ranging from 1 to 1800 days
Allows configuring tiering frequency and start time:
Frequency: minimum 1 hour, maximum 1 week
Supports storing 60,000 logs
Data tiering behavior includes the following:
Once a shared folder is included in a tiering plan, data are moved at the file level
Eligible files are moved to cold tier as per the tiering schedule. If volume capacity tiering is enabled, and the hot storage capacity remains below the set threshold after this initial tiering, the system will then move the oldest files. This process continues until the available space in the hot tier exceeds the defined limit
Tiered files are moved back to the hot tier upon editing or frequent read access from the hot tier, with the following exceptions:
If hot tier remaining space is less than 1% or 100 GB, the file will not be moved back solely due to read access
Editing is prevented if the hot tier lacks sufficient space to accommodate the file
If hot tier usage exceeds 95%, new shared folders cannot be added to existing plans
Renaming a file on the hot tier does not trigger its return from the cold tier
If tiering fails, the system waits until the next scheduled tiering without retry attempts. Failures are logged and displayed in the status and log
Once a file is moved to the cold tier, structural changes made on the hot tier (such as renaming or moving the file) will not be reflected on the cold tier
Data tiering and retrieval increase system memory usage, potentially impacting overall performance and the access speed of tiered files. These tasks should be carried out during off-peak hours
Quotas set for hot tier source folders include tiered data
Supports setting independent quotas for corresponding folders on the cold tier
Supports tiering shared folders located in encrypted volumes. However, the cold tier volume is not automatically encrypted
Synology Tiering records file access time separately. The file access time recording frequency in Storage Manager does not apply to shared folders included in tiering plans
The following settings from hot tier source folders are not applied to their corresponding cold tier folders:
Hide this shared folder in "My Network Places"
Hide sub-folders and files from users without permissions
Recycle bin settings
Data checksum settings
Shared folder quota
File or folder permissions
Advanced permissions
NFS permissions
Custom integration with selected Synology packages:
Synology Drive:
Supports including Team Folders in tiering plans
Allows shared folders in tiering plans to be enabled as Team Folders
If a Team Folder is included in a tiering plan, its previous versions also follow the same tiering plan and schedule
File attributes, including tags, starred status, and existing sharing permissions, are preserved during tiering
Indexing in Synology Drive does not retrieve data from cold tier
File Station:
Supports moving a file or folder to the cold tier from File Station when its shared folder is included in a tiering plan
Administrators can view whether a file is currently in the hot or cold tier from File Station on the hot tier
Hyper Backup: Supports separate backups of hot and cold tier (Learn more)
Snapshot Replication:
Supports taking snapshots of both hot and cold tier simultaneously from hot tier, until either tier reaches its snapshot limit(Learn more)
Tiered files are not moved back to the hot tier when a snapshot is taken
Hot and cold tier snapshots are stored separately and locally
If snapshot lock and immutable snapshot are enabled on the hot tier, these functions will also be automatically enabled on the cold tier.
Storage Analyzer: Hot tier analysis includes tiered files; these files are not moved back to the hot tier during analysis
Antivirus Essential and Antivirus by McAfee: When scanning the hot tier, tiered files are excluded from the scan
Storage Manager:
Data deduplication supports independent operation for hot and cold tiers
Usage detail analysis is automatically enabled for both hot and cold tiers and must remain enabled for data tiering to function